XR7 Dave
Registered User
Well unfortunately not too many people took advantage of the opportunity to see the 1.7L AR in action on Hot Rod Power Tour. We made the 3500mile trek without incident, and I was hoping to give some people rides in the car but Doug Franklin was the only one who cashed in.
Anyway, the car performed flawlessly and the blower did as well. With the largest pulley offered, it makes about 15psi (+/-) with the gauge pegging out somewhere north of 4000rpm. The SOTP dyno says the car is strong all the way to at least 5500rpm unlike an M90 car that wimps out after 4500. I can't say how much power it makes exactly but it feels very good. By far the biggest SOTP mod I've ever done.
I will be taking the car to the dyno this week for some tuning and verifiction of results. It is worthy to note that the car currently has no tuning whatsoever and it runs great. While special tuning will undoubtedly greatly enhance the potential of the new blower, none was needed to experience a very pronounced gain.
As for noise, I have to point out that I have a totally stock intake (minus the silencer). In this configuation the blower is about as loud as my S-model. It is totally unobtrusive in normal driving but it really lets loose at high rpm. It's really from 4500 and up that it starts to sound like - well - nothing else you're likely to come accross.
In the gas mileage department, we got some really respectable numbers. The Cougar managed a best of 22mpg and the SWB hit 26.5mpg twice. The worst we got with the Cougar was 17mph and the worst I got with SWB was 19.5mpg. I can't really compare those numbers directly to a totally stock SC but the 26.5 was achieved while cruising at 75+mph continuously. That is the best mileage I have ever gotten from an SC. Normally I get about 21mpg with mixed driving. It is possible that the AR takes a little more gas but I don't think so.
Well that's it for now. Watch for the dyno numbers in a few days.
David
Anyway, the car performed flawlessly and the blower did as well. With the largest pulley offered, it makes about 15psi (+/-) with the gauge pegging out somewhere north of 4000rpm. The SOTP dyno says the car is strong all the way to at least 5500rpm unlike an M90 car that wimps out after 4500. I can't say how much power it makes exactly but it feels very good. By far the biggest SOTP mod I've ever done.
I will be taking the car to the dyno this week for some tuning and verifiction of results. It is worthy to note that the car currently has no tuning whatsoever and it runs great. While special tuning will undoubtedly greatly enhance the potential of the new blower, none was needed to experience a very pronounced gain.
As for noise, I have to point out that I have a totally stock intake (minus the silencer). In this configuation the blower is about as loud as my S-model. It is totally unobtrusive in normal driving but it really lets loose at high rpm. It's really from 4500 and up that it starts to sound like - well - nothing else you're likely to come accross.
In the gas mileage department, we got some really respectable numbers. The Cougar managed a best of 22mpg and the SWB hit 26.5mpg twice. The worst we got with the Cougar was 17mph and the worst I got with SWB was 19.5mpg. I can't really compare those numbers directly to a totally stock SC but the 26.5 was achieved while cruising at 75+mph continuously. That is the best mileage I have ever gotten from an SC. Normally I get about 21mpg with mixed driving. It is possible that the AR takes a little more gas but I don't think so.
Well that's it for now. Watch for the dyno numbers in a few days.
David